DNR Fish Team supervisor Justine Hasz says it's likely the pelicans are turning up because their normal staging grounds on Lake Michigan are still frozen.

The DNR expects the cold winter will result in more dead fish in lakes throughout the state. The department expects winter kill to be worst in shallower, backwater areas. Castle Rock Lake also may have been hit hard, Hasz said.

Hasz said the DNR planned to investigate the issue further on Tuesday.